Half to ciialmer o



Nu. (112,455. Patg ntd out; 18; I898.

w. m. GORE, PIPE FLANGE COUPLING.

(Application filed Oct. 12, 1897.)

(No Model.)

ma NDRRIS PETERS c0. PHOTO-LYITHQ, WASHINGTON, a. c.

I'IED STATES PATENT FFICE.

l VILLIAM M. GORE,'O F J OHNSTOVN, PENNSYLVANIA, ASSIGNOR OF ONE- I-IALFTOOHALMER O. -WILLETT,"OF SAME PLACE.

PIPE-FLANGE COUPLING.

SPECIFICATION forming part of Letters Patent No. 612,455, dated October18, 1898. Application filed October I2, 1897. Serial No- 654,9'72. (Nomodel.)

To all whom it may concern:

Be it known that LWILLIA M. Gonna citizen of the United States, residingat J ohnstown, in the county of Oambria and State of Pennsylvania, haveinvented certain new and useful Improvements in Pipe-Flange Ooup lings;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention has relation to pipe-flange couplings, and moreparticularly to that class of which the patent, No. 214,812, issuedApril 29, 1879, to J. H. Olark,may be taken as a type, and the object isto provide a simple, effective, and reliable device for this purpose;and to this end the novelty consists in the construction, combination,and arrangement of the same, as will behereinafter more fully describedand particularly pointed out in the claim.

In the accompanying drawings reference characters indicate of theinvention.

Figure 1 is a perspective view of my improved pipe-flange coupling, theparts being separated to show their construction. Fig. 2 is a transversesection, and Fig. 3 is a modification of the same.

2 and 3 represent similar sized flanges formed with concentric alinedthreaded oriflees 1 4: and an annular series of alined boltholes 5 5.

6 represents an annular groove arranged in the face of the flange 2concentric with the threaded orifice at, and the walls 7 7 of thisgroove diverge outwardly, as shown.

8 represents an annular rib or ring on the the same the same partscontiguous face of the flange 3 and adapted to engage the groove 6 inthe flange 2. The converging walls 9 9 of annular rib 8 are formed at amore obtuse angle than the angle formed by the walls of the groove. Thebottom 10 of the groove and the top 12 of the rib are formed withparallel plane surfaces,

as shown.

An important feature of construction is gained by forming the walls ofthe rib and groove as above set forth, as a ground-joint can be readilymade, before the pipes are screwed into the flanges, and thus dispensewith the flexible packing ring.

13 represents a continuous flexible packingring.

I In the modification the bottom of the groove and the top of the ribare both formed with a semicircular recess to receive the packingring.

Having thus fully described my invention, what I claim as new anduseful, and desire to secure by Letters Patent of the United States,

An improved pipe-coupling comprising the flange2 formed with the annularconcentric groove 6having diverging walls 7 7 in com- I bination withthe flange 3 formed with the annular concentric rib 8 having itsconverging walls 9 9 formed at a more obtuse angle than the walls of thegroove 6, substantially as shown and described.

In testimony whereof I hereunto affix my signature in presence of twowitnesses;

WM. M. GORE.

Witnesses 2 CHAS. LUNDGREN, LIZZIE DAVIS.

